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    Fundamental aspects of bubble–particle attachment mechanism in flotation separation

    Access Status
    Fulltext not available
    Authors
    Albijanic, Boris
    Ozdemir, O.
    Hampton, M.
    Nguyen, P.
    Nguyen, A.
    Bradshaw, D.
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Albijanic, B. and Ozdemir, O. and Hampton, M. and Nguyen, P. and Nguyen, A. and Bradshaw, D. 2014. Fundamental aspects of bubble–particle attachment mechanism in flotation separation. Minerals Engineering. 65: pp. 187-195.
    Source Title
    Minerals Engineering
    DOI
    10.1016/j.mineng.2014.06.008
    ISSN
    0892-6875
    School
    Dept of Mining Eng & Metallurgical Eng
    URI
    http://hdl.handle.net/20.500.11937/20044
    Collection
    • Curtin Research Publications
    Abstract

    Analysis of bubble–particle mechanism is important for improving our understanding of flotation process. The research presented integrates microflotation experiments, bubble–particle attachment time measurements, and colloid and surface characterization and analysis. The bubble–particle attachment time was inversely related to the flotation recovery and the minimum attachment time matched the maximum flotation recovery, which occurred around mutual isoelectric point for the glass particles and air bubbles. Bubble–particle force measurements, performed with an Atomic Force Microscope (AFM), showed a similar trend. Additionally, the adsorption isotherm of the glass–dodecyl amine hydrochloride (DAH) system indicated that there are the three adsorption regions, and the flotation recovery reached its maximum value in the second region of DAH adsorption on the glass surface. All results obtained in this study showed the important role of colloidal forces affected by surfactant adsorption in bubble–particle attachment.

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